Upon completion of this chapter, you will be able to:
» List reasons that LCDs are gaining widespread use, replacing LEDs
» Describe the functions of the pins of a typical LCD
» List instruction command codes for programming an LCD
» Interface an LCD to the 8051
» Program an LCD in Assembly and C
» Explain the basic operation of a keyboard
» Describe the key press and detection mechanisms

» Interface a 4×4 keypad to the 8051 using C and Assembly

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